Threading device for shuttles



1,627,308 y 1927- v A. BERNIER THREADING DEVICE FOR SHUTTLES Filed March 23.. 1926 v Ania/r776 Bern/6i; (NVENTORL AWN "A TTORNE Y.

Patented May 3, 1927.

UNITED STATES ANSELME IBERNIER, or BIDDEFORD, MAINE.

THREADING DEVICE FOR SHUTTLES.

.tpplicationv filed Mareh 23, 1926.- Serial No. 96,813. v

This invention relates to improvements in threading devices for loom shuttles, and the primary object of the present invention is to provide a novel form of threadingdevice which will effectively prevent the passage of bunches or knots at the entry thereof and which will place the thread under tension so as to make the cloth even in texture, and prevent bunches or knotsappea-ringin the cloth.

A more specific object of theinvention is to provide an automaticlthreading device for automatic filling replenishing loom shuttles with simple and effective means for preventing the passage of bunches or knots atthe entry of the threading device and for placing the thread under tensionso as to make the cloth, even in texture, and prevent bunches or knots appearing in it.

A further object of the invention is to provide a bunch or knot detecting device and thread guiding and tensioning means which can be readily applied to usual forms of shuttles without material changes in (the form of the threading device or modification of the shuttles. v I e Other objects will appear as the nature of the invention is better understood, and the same consists in the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawing and claimed. i

In the drawing, :wherein like reference characters indicate corresponding parts throughout the several views, a V

Figure 1 is a plan view of the front end of a shuttle adapted for use in an automatic filling replenishing loom and having a threa ding device equipped with a bunch or knot detecting means and thread tensioning means constructed. in accordance with the present invention; l

Figure 2 is an end elevation looking at the inner end of the threading device shown in Fi ure l; i I

igure 3 is a detail view, partly in ion gitudinalsectioin of the front end of the shuttle and threading device illustrated in Fi ure 1.; p

7 Figure l is a fragmentary horizontalsec- V tional view of the threading device taken substantially upon line I l-4 of Figure 3 Figure 5 is a bottom plan view of the threading device;and I i Figure 6 is anend elevational view of the threading device looking at the outer vend thereof. 7 c i v The invention is disclosed in the accompanying drawing as applied to a usual form of shuttle for automatic filling replenishing looms comprising a body portion 5 having a chamber 6 for a filling carrier ,7 and a channel 8 leading from said chamber in the direction of the axis of, the shuttle, theshuttle having a side eye 9 and threading slotlO leading from said eye to the channel 8. v

A threading device 11, which is secured within the channel 8, is provided with a threadpassage leading to the eyeand with means for directing the thread orlilling running from the filling carrier into said thread passage during the flight ofthe shuttle across the loom. The threadingdevice may be constructed-in any suitable; manner to embody the improved bunch or knot detect- ,ing and thread tensioning means therein. In the preferred embodiment illustrated in the accompanying drawing, the. threading device 11 comprises a solid block havinga thread passage 12 in the form of a cylindrical aperture or bore extending llongitudia nally therethrough and located substantially in the longitudinal axis of the shuttle. ,A second cylindrical aperture or bore 13 is located directly above the bore 12, said apertures or bores being located insuch proxv il'nitythat a portion of the wall between them is cut away to form a threading slot 14.

The outer or forward end of the threading device ll presents an inturned: beak 15 hav ing a rearwardly extending horn 16 which projects across the vertical axial plane of the shuttle and serves to prevent the filling from escaping from the thread aperture when introduced therein. The front wall of the beak 15 is so located as to form the. rear wall of the threading slot 10 leading to the eye 9 of the shuttle, and may beprovided with a flanged portion 17 which enters a complementary notch in the body of the shuttle for aiding in securing the, threading device firmly in place The threading device is provided at its front end with a shield 18 which overhangs the beak l5 and horn l6 and is supported therefrom a sufiicient distance to permit the introduction, of the thread, the beak and shield thus positioned providing meansfor guiding the thread into the threadingslot during thetlight of the shuttle across. the

, filling.

loom and serving to retain the thread within.

the thread passage 12 and eye Qafter it has been introduced. I

In accordance with the present invention a transverse plate or wall 19 is fixed at the inner ends of the passages 12 and 13 and provided with a vertical elongated and narrow slot 20 which opens through the upper edge of the plate 19 and which is located in a longitudinal plane co-incident with the longitudinal axes of thepassage's 12 and 13 for reception of the thread or The slot 2O- is of such width as to permit the passage of the thread and at the samejtime cause the latter to trictionally engage the sides of the slot, to aid in placing the thread or filling under tension. 1t is obvious that the slot 20, being of such character, will effectively prevent the passages 01 bunches or knots into the thread passage 12 so that the cloth may be made even in texture or without bunches or knots appearing-in the same. In the preferred embodiment shown, the plate313 constitutes a wall formed rigidly with the inner end of the threading device.

A vertical felongated and narrow loop 21 is attached to the forward or outer end of the threadingdevice so that the lower portion'of the same depends into the forward orouter end of the thread passage 12 centrally between the sides of the latter as clearly shown inFigure 6, and it will thus be seen that when the thread is led between the arms of the loop 21 from the slotQO, such thread will be effectively centered in the thread passage. The space between the arms of the loop 21 is similar to the width of the slot 20 so that the loop 21 frictionally engages the thread as it passes from the forward or outer endoi the thread passage 19 to the eye 9' of the shuttle. plate 19 and loop 21 cooperate to placethe thread under tension for further insuring an even texture of the cloth. As shown, the loop 21 is formed from a single strip of resilient metal centrally return bent and having its free upper ends directedapart and soldered or otherwise secured to the sides of the upper longitudinal here or passage 13 as-generally indicated at 22". In this waythe loop 21 is formed so as to be open at its upper end and provided with" a flared entrance for permitting the passage of the thread from the bore 13 through the slot 14 into. the thread passage 12 with said .thread maintained centrally of the passage 12 between the sides of the lower portion of the loop. 1

From the foregoing description it will be seen that the slotted plate 13" and loop 91]; form a simple and inexpensive means 'for etlectively preventing the passage of bunches or knots from the shuttle and before reaching the eye 9 of the latter, while at Thus, the

vice-i-n said channel having a thread the same time cooperating for effectively placing the thread under tension and in a straight condition in the thread passage 12.

lVhile the preferred form of the invention contemplates the modification of a fications inform, constructionand arrange so ment oi parts may be made within the spirit and scope of the following claims.

hat I claim as new is 1. A loom shuttle having a chamber for a filling carrier, a thread delivery eye,a

channel extending longitudinally of said shuttle leading to said eye, and means located in said channel for placing the thread under tension and preventing the passage of bunches and knots to said eye, said last named means embodying a transverse plate having a vertical narrow thread guiding slot of uniform width and opening through the upper edge of the plate, said plate being mounted in the inner end portion of said channel, and a narrow vertically elongated 1001) open at its upper end and rigidly mounted in the outer end portion of said channel for guiding and frictionalengagcment with-the thread in its passage to the eye. I

2. loom shuttle having a chamber for a filling carrier, a thread delivery eye, a channel extending longitudinally of said channel leading to said eye, a threading device in said channel having a thread. passage extending longitudinally of the shuttle, and thread tensioning and knot detecting. means in said thread passage, said last named means comprising a plate rigid with the inner end of the threading deviceand having a vertical narrow slot of uniform width opening through the upper edge thereof, and a narrow vertically elongated looprigidly mounted on the outerend of 15 the threading device and centrally depending into the outer end of said thread passage. t

A loom shuttlehaving a chamber for a filling carrier, a thread delivery eye, a

channel. extending longitudinally off said channel leading to said eye, a threading de- P sage extendlng longltudinally of the shuttle,

and thread tensioning and knot detecting means in said thread passage, said last named means comprising a plate rigid with the inner end of the threading device and having a vertical narrow slot of uniform} width opening through the upper edge-them U0 of,and a narrow vertically elongated loop rigidly mounted on the outer end of the threading device and centrally depending into the outer end of said thread passage,

said loop having an open upper end forming a flared thread entrance.

4. Aloom shuttle having a chamber for a filling carrier, a thread delivery eye,'a channel extending longitudinally 01' said shuttle, a transverse threadlng slot leading from said channel to said eye, a threading device in said channel comprising a block slotted to provide a guideway for introducing the thread into said thread passage, a beak, a shield overlying said beak, a vertical elongated narrow loop comprising a strip of material with upper free ends expanded and secured to the sides of the second named bore, whereby the loop is suspended to depend through the guideway centrally of the outer end of the thread passage, and a plate rigid with the inner end of the threading devlce and having a vertical narrow sloi opening through the upper edge thereof in longitudinal alignment with the axes of the I,

bores.

In testimony whereof I affix my signature.

ANSELME BERNIER. 

